joshforisha/open-simplex-noise-js

OpenSimplex noise for TypeScript/JavaScript

open-simplex-noise-js's Issues

Documentation

We need some docs. At this moment some information about the returned value range of the noise function. Just add a line to readme.md about the value range. 0..1 or -1..1 or -0.5..0.5? etc.

Ok I see that the value is -1..1. So I can normalize it by (value + 1) / 2 to convert -1..1 to 0..1.
But as I can see it correctly it's never reaches 1 (min / max). It's about 0.7 or 0.9. I tested it with with a lot of iterations.

Expose ES6 / TypeScript modules

Would be nice if it were possible to import this library as ES6 modules, e.g. when compiling via rollup or tsc in your own toolchain.

Support for infinite noise

Better doc

What is the range of output?

Cannot resolve './constants'

I get the following webpack error when loading this module in a typescript project:

ERROR in ./node_modules/open-simplex-noise/lib/index.js
Module not found: Error: Can't resolve './constants' in '~/code/phaser-games/top-down-rpg/node_modules/open-simplex-noise/lib'
 @ ./node_modules/open-simplex-noise/lib/index.js 3:18-40
 @ ./src/GameScene.ts
 @ ./src/index.ts

This is the project template I'm using in case it's something wrong with my webpack/ts configs. I verified that you can reproduce the error by cloning this repo and trying to use the module. For example:

// GameScene.ts
import { makeNoise2D } from "open-simplex-noise"
const noise = makeNoise2D()

open-simplex-noise is not the fastest noise library

I don't know if speed is even a design goal for you, so feel free to close this issue if it's not. 😄

Basically, I decided to evaluate a handful of different noise generators while profiling texture-generation in one of my own projects and thought you might be interested to see how this library stacks up if nothing else.

jsperf is here: https://jsperf.com/fast-simplex-noise/1

Better example image

It is known that simplex noise is used in landscape generation. But your example image looks rather like a white noise.

Can you change it to a better image, so game developers can trust this lib is for them?